<!--
    1.navigation 宽度200px，位于content左侧
    2.content margin-left:200px margin-right: 33%
    3.extra 宽度33%，位于content右侧
-->
<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
        #header, #footer{
            height: 50px;
            background-color: gray;
            clear: both;
        }
        #wrapper{
            width: 100%;
            height: 100px;
            
            float: left;
            background-color: gold;
        }
        #content{
            margin: 0 33% 0 200px;
        }
        #navigation,#extra{
            height: 100px;
            float: left;
        }
        #navigation{
            width: 200px;
            background-color: forestgreen;
            margin-left: -100%;
        }
        #extra{
            width:33%;
            background-color: firebrick;
            margin-left: -33%;;
        }
    </style>
</head>
<body>
    <div id="container">
        <div id="header">Header</div>
        <div id="wrapper">
            <div id="content">Content</div>
        </div>
        <div id="navigation">Navigation</div>
        <div id="extra">Extra stuff</div>
        <div id="footer">Footer</div>
    </div>    
</body>
</html>